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3 years ago

Which of the following would be appropriate reason(s) for scientists to reject atomic theory?

Chemistry

2 answers:

WARRIOR [948]3 years ago

8 0

Answer: b. Evidence that some kinds of matter are made up of waves instead of particles

C. Observations that cannot be explained by the theory

Explanation:

leonid [27]3 years ago

3 0

It posed a contradiction to Quantum Theory

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To pull up a bucket of water from a well, George pulled hard on a handle to wind up a rope. Which kind of energy was George appl

mote1985 [20]

b frictional energy

is the correct answer

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3 years ago

Which of the following represents the least number of molecues?

Mars2501 [29]

Answer:

Answer: a) 20g of H2O (18.02 g/mol) molecules=6.68x10^23

Explanation:

In order to find the amount of molecules of each of the options, we need to follow the following equation.

$molecules=\frac{mass(g)x6.022x10^{23}(molecules/mol) }{atomic weight(g/mol)}$

So, let´s get the number of molecules for each of the options.

$a) molecules=\frac{20(g)x6.022x10^{23}(molecules/mol) }{18.02(g/mol)}=6.68x10^{23}molecules$

$b) molecules=\frac{77(g)x6.022x10^{23}(molecules/mol) }{16.06(g/mol)}=2.89x10^{24}molecules$

$c) molecules=\frac{68(g)x6.022x10^{23}(molecules/mol) }{42.09(g/mol)}=9.73x10^{23}molecules$

$d) molecules=\frac{100(g)x6.022x10^{23}(molecules/mol) }{44.02(g/mol)}=1.37x10^{24}molecules$

$d) molecules=\frac{84(g)x6.022x10^{23}(molecules/mol) }{20.01(g/mol)}=2.53x10^{24}molecules$

the smalest number is in option a)

Best of luck.

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3 years ago

Choose the term that best describes the following statement: a system in equilibrium will oppose a change in a way that helps re

Scorpion4ik [409]

Le Chatelier's principle (D)

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3 years ago

Balance the equation <br> Ca(s) + H3PO4(aq) ---->Ca3(PO4)2(s) + H2(g)

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Answer: CO2x+O4H I don’t know if this is the right answer

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2 years ago

I NEED THESE ANSWERS ASAP

Snezhnost [94]

First one - Mg(OH)2+2HCl— MgCl2+ 2H2O
second one - CH4+2O2– 2H20
Third- is already balanced.

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4 years ago

Which of the following would be appropriate reason(s) for scientists to reject atomic theory?​

Which of the following would be appropriate reason(s) for scientists to reject atomic theory?